The Plastic T Connector is great for any lab or experiment that requires tubes to be attached.
See photos for measurements.
Inner tube diameter: 4 mm
Outer diameter: 7 mm
Head outer diameter: 8.5 mm (To provide a secure connection)
Fits rubber tubes with inner diameter of 6 mm up to 8.5 mm
Also fits soft PVC tubes with inner diameter of 7 mm up to 8 mm

The Plastic Y Connector is great for any lab or experiment that requires tubes to be attached.
See photos for measurements.
Inner tube diameter: 4 mm
Outer diameter: 7 mm
Head outer diameter: 8.5 mm (To provide a secure connection)
Fits rubber tubes with inner diameter of 6 mm up to 8.5 mm
Also fits soft PVC tubes with inner diameter of 7 mm up to 8 mm

The Plastic X Connector is great for any lab or experiment that requires tubes to be attached.
Perfectly matches the 3/16" Red Rubber Tubing (RTUBING316).
See photos for measurements.
Inner tube diameter: 2.9 mm
Outer diameter: 5.2 mm
Head outer diameter: 6.2 mm (To provide a secure connection)
Fits rubber tubes with inner diameter of 4 mm up to 6 mm
Also fits soft PVC tubes with inner diameter of 5 mm up to 6 mm

Clear plastic tubing made of Polyvinyl Chloride is colorless, tasteless and non-toxic. It lasts 15 to 20 times that of rubber and it has excellent age resistance qualities. Highly resistant to oils, acids, alkalies. Can be safely used in the conveying and processing of food stuffs. PVCTUBE is not affected by bacteria and has very low water absorption. Can be steam-sterilized at 20 Lbs steam pressure for 15 minutes. PVCTUBE should not be exposed to aromatic-hydrocarbons, ketons or esters for more

This dialysis tubing has a diameter of 49 mm. When closed, the strip is 77 mm tall and the length is 10ft. Dialysis Tubing is a semi-permeable membrane created from a natural source of cellulose. It allows passage of particles up to 14,000 molecular weight standards.